WebDriver与ChromeDriver [英] WebDriver vs ChromeDriver

问题描述

在Selenium 2 - Java中，

ChromeDriver driver = new ChromeDriver（）;

和

WebDriver driver = new ChromeDriver（）;

？我已经看到了这些在各种教程，例子等中使用。

解决方案

WebDriver是一个界面，而ChromeDriver是一个实现WebDriver接口的类。实际上ChromeDriver扩展了实现WebDriver的RemoteWebDriver。我想补充像ChromeDriver，FirefoxDriver每webdriver的，EdgeDriver都应该实现的webdriver。

下面是ChromeDriver的签名和RemoteDriver类

'pre> 公共类ChromeDriver延伸RemoteWebDriver
实现LocationContext，WebStorage {}

公共类RemoteWebDriver实现的webdriver，JavascriptExecutor，
FindsById，FindsByClassName，FindsByLinkText，FindsByName，
FindsByCssSelector，FindsByTagName，FindsByXPath，
HasInputDevices，HasCapabilities，TakesScreenshot {}


In Selenium 2 - Java, what's the difference between

ChromeDriver driver = new ChromeDriver();

and

WebDriver driver = new ChromeDriver();

? I've seen both of these used in various tutorials, examples, etc.

解决方案

WebDriver is an interface, while ChromeDriver is a class which implements WebDriver interface. Actually ChromeDriver extends RemoteWebDriver which implements WebDriver. Just to add Every WebDriver like ChromeDriver, FirefoxDriver, EdgeDriver are supposed to implement WebDriver.

Below are the signatures of ChromeDriver and RemoteDriver classes

public class ChromeDriver extends RemoteWebDriver
implements LocationContext, WebStorage {}

public class RemoteWebDriver implements WebDriver, JavascriptExecutor,
FindsById, FindsByClassName, FindsByLinkText, FindsByName,
FindsByCssSelector, FindsByTagName, FindsByXPath,
HasInputDevices, HasCapabilities, TakesScreenshot {}

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